Kahlan
Kahlan was one of the main tribal confederations of Saba' in Ancient Yemen. They are descended from Kahlan bin Saba bin Yishjab bin Yarub bin Qahtan.
Conflict with Himyar
By the 2nd century BC Saba' was declining gradually and its southern neighbor Himyar was able to settle many nomadic tribes that were allied to Himyar and create a stronger Himyarite nation in the lowlands. Eventually Saba' was incorporated into Himyar and resistance was reduced to the Kahlan tribes who were overpowered by Himyar and forced out of Highlands in Yemen. Most of Kahlan remained in the Yemeni desert region around Marib until the destruction of the Dam in the 3rd century AD. this forced the Kahlani tribes to emigrate northwards through Arabia. They reaching as far as Mesopotamia and Syria prior to the 7th century Arab conquests under Islam. After the Arab conquests, the Kahlani Arabs, among other Qahtani and Adnani tribes, reached all the way to the far edges of the Umayyad Empire.The Kahlan Septs
The Kahlan branched into 5 main branches; Azd, Hamdan, Lakhm, Tayy, Kinda.Madhhij
Azd branches
In the 3rd century AD. The Azd branched into four branches each led by one of the sons of the Arabian king Muzayqiya.Imran bin Amr
and the bulk of the tribe went to Oman where they established the Azdi presence in Eastern Arabia and later invaded Karman and Shiraz in Southern Persia. Another branch headed west back to Yemen and a group went further West all the way to Tihama on the Red Sea. This branch will become known as Azd Uman after Islam.Jafnah ibn 'Amr
and his family, headed for Syria where he settled and initiated the kingdom of the Ghassanids who was so named after a spring of water where they stopped on their way to Syria.Thalabah bin Amr
left his tribe Al-Azd for Hijaz and lived between Thalabiyah and Dhi Qar. When he gained strength, he headed for Yathrib where he stayed. Of his seed are the great Aws and Khazraj, sons of Haritha bin Thalabah. Those will be the Muslim Ansar and will produce the last Arab Dynasty in Spain.Haritha bin Amr
Haritha bin Amr. Lead a branch of the Azd Qahtani tribes wandered with his tribe in Hijaz until they came to Tihama. He has two sons Uday and Lahi, Uday father of Bariq and lahi father of Khuza'a.Hamdan branches
Hashid and Bakil
Today still in the same ancient tribal form in Yemen Hashid and Bakil of Hamdan remained in the highlands North of Sana'a between Marib and Hajja'a.Banu Yam
settled to the North of Bakil in Najran it also branched into the tribes: the Al Murrah and the 'Ujman of eastern Saudi Arabia and the Persian Gulf coast.Banu Kathir
moved to Hadramut in the East of Yemen where they established their own sultanate.Banu Al-Mashruki
settled in Lebanon producing well known Maronite influential families such as the Awwad, Massa'ad, Al-Sema'ani, Hasroun.Banu Al Harith remained in Jabal Amil and were mainly Shia. A smaller group joined the Yemeni Druze and were eventually pushed by Kaysi Druze to Jabal Al Druze in Syria.
Banu Lakhm
Under the leadership of Malik bin Uday bin Al-Harith bin Murr bin Add bin Zayed bin Yashjub bin Uraieb bin Zayed. They spread to the North mainly in Southern and Western Mesopotamia, Rafah, Golan, Hauran and they were the first Southern Arabs to settle Northern Egypt where they were later joined with the Sicasik, Banu Judham and the Ghassanids. The Lakhmids produced The Abadi, Ubadi and Banu Bahr dynasties in Spain.Other notable Lakhmid is the late Arab leader Gamal Abdul Nasser from the Bani Mur of Banu Lakhm.